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8058466 Method for producing 3-pentenenitrile by means of the hydrocyanation of 1,3-butadiene  
An process for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene, in which the process yield with regard to recycled 1,3-butadiene is maximized.
7935229 Extraction of nickel (0) complexes from nitrile mixtures with reduced rag formation  
A process for extractively removing homogeneously dissolved catalysts from a reaction effluent of a hydrocyanation of unsaturated mononitriles to dinitriles with a hydrocarbon H, including...
7880028 Process for making 3-pentenenitrile by hydrocyanation of butadiene  
The invention provides a continuous process for the production of 3-pentenenitrile, comprising: (a) contacting, in a reaction zone, a hydrogen cyanide-containing feed, a 1,3-butadiene-containing...
7781608 Production of 3-pentenenitrile from 1,3-butadiene  
A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene, wherein 1,3-butadiene is reacted with hydrogen cyanide in the presence of at least one catalyst and the stream...
7612223 Process for the hydrocyanation of unsaturated compounds  
The present invention relates to a process for the hydrocyanation of unsaturated compounds to unsaturated mononitrile compounds or to dinitrile compounds; It relates more particularly to a process...
7538240 Method for the hydrocyanation of butadiene  
A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene in the presence of at least one catalyst, wherein the reaction is carried out in a loop reactor having external...
7485741 Method of producing nitrile compounds from ethylenically-unsaturated compounds  
The present invention relates to a process for hydrocyanating a hydrocarbon-based compound containing at least one ethylenic unsaturation by reaction in liquid medium with hydrogen cyanide in the...
7119233 Method for preparing 3-(methylthio)propanal  
A method for preparing 3-(methylthio)propanal and 2-hydroxy-4-(methylthio)butanenitrile by catalyzed addition of methylmercaptan to acrolein and hydrogen cyanide to 3-(methylthio)propanal.
7098358 Hydrocyanation method for ethylenically unsaturated organic compounds  
The invention concerns a method for hydrocyanation of ethylenically unsaturated organic compounds into compounds comprising at least a nitrile function. More particularly, it concerns a method for...
7084293 Process of synthesis of compounds having nitrile functions from ethylenically unsaturated compounds  
The present invention relates to a process of hydrocyanation of ethylenically unsaturated organic compounds to compounds having at least one nitrile function, particularly the hydrocyanation of...
7022866 Phosphonites  
Phosphonites I of the formula 1 or 2 where R1, R2 are each, independently of one another, hydrogen, an alkyl or alkylene group having from 1 to 8 carbon atoms or an alkoxy group having from 1 to 8...
6936171 Process for catalyst recovery from hydrocyanation product mixtures  
Disclosed herein is a process for recovering diphosphite-containing compounds from a mixture comprising diphosphite-containing compounds and organic dinitriles and Lewis acid, using liquid-liquid...
6852661 Catalyst comprising a metal complex of the VIII subgroup based on a phosphine amidite ligand and its utilization for hydroformylation and hydrocyanation  
A catalyst comprising at least one complex of a metal of transition group VIII comprising at least one monodentate, bidentate or multidentate phosphinamidite ligand in which the phosphorus atom and...
6846945 Phosphonite ligands and their use in hydrocyanation  
Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII...
6844448 Main-group metal-based asymmetric catalysts and applications thereof  
The present invention relates to a method and catalysts for the stereoselective addition of a nucleophile to a reactive π-bond of a substrate. The chiral, non-racemic catalysts of the present ...
6770770 Phosphites  
Novel phosphites have the formula I P(O—R1)x(O—R2)y(O—R3)z(O—R4)p IwhereR1: aromatic radical having a C1-C18-alkyl substituent in the o position relative to the oxygen atom which connects the pho...
6753440 Copper-catalyzed vapor phase hydrocyanation of diolefinic compounds  
A catalyzed vapor phase process for the hydrocyanation of acyclic diolefinic compounds to olefinic nitriles is described in which the olefinic double bond is not conjugated to the triple bond of...
6630600 3-aryl propionic acid derivatives and analogs  
Novel 3-aryl propionic acid derivatives and analogs, process and intermediate for their manufacture, pharmaceutical preparations containing them and the use of the compounds in clinical conditions...
6624323 Process and intermediates for making 4-cyanosubstituted cyclohexanoic acids  
Herein is provided a process for preparing substituted cyclohexanoic acids of formula (I), where Ra is a carbon-containing group optionally linked by oxygen, sulfur or nitrogen to the phenyl ring...
5817850 Ferrocene bis(phosphonite) ligands and complexes for transition-metal-catalyzed reactions  
The synthesis of new sterically hindered ferrocene bis(phosphonites) of formula I ##STR1## the synthesis of the corresponding transition-metal complexes and the use of these complexes in...
5463103 Process for producing 1,4-dicyano-2-butene  
The object of the present invention is to provide a process for producing 1,4-dicyano-2-butene in a high yield and in an industrially advantageous way.The present invention relates to a process for...
5449811 Process for the production of 1-amino-1-methyl-3(4)-cyanocyclohexane  
A new process for the production of 1-amino-1-methyl-3(4)-cyanocyclohexane (AMCC), an intermediate for the manufacture of 1-isocyanato-1-methyl-3(4)-isocyanatomethylcyclohexane. In this process,...
5107012 Hydrocyanation of pentenenitriles using cyanohydrins  
Hydrocyanation of penetenenitriles using cyanohydrins as the HCN source and in which a solid dissociation additive is present in a slurry to facilitate the dissociation of the cyanohydrin.
4990645 Hydrocyanation process  
An improved process for the hydrocyanation of pentenenitrile which comprises adding solid catalyst degradation precipitate to the hydrocyanation reactor, and operating the reactor at a level of HCN...
4990630 2,3-diaminoacrylonitrile derivatives and process for making the same  
The present invention relates to a 2,3-diaminoacrylonitrile derivative or salts thereof, having the formula ##STR1## wherein R represents an alkyl group (which may be substituted by unsubstituted...
4915875 Oxidation products of paramethyl-substituted hindered phenols  
Paramethyl-substituted hindered phenols are selectively oxidized by contacting with an oxidizing agent at elevated temperatures in the presence of a heterogeneous oxidative coupling catalyst. In...
4810815 Acceleration of diene hydrocyanation  
Process of polyene hydrocyanation, in particular diene hydrocyanation, wherein a promotionally effective amount of any acid with a pKa above about 2 and below and 14, preferably aryl alcohols such...
4810814 Preparation of cyanoalkylphenols  
A method for preparing cyanaolkylphenols such as 4-(1-cyano-1-methylethyl)phenol by reacting cyanide ion in a form such as sodium cyanide with an alkenyl phenol such as 4-(2-propenyl)phenol.The...
4788318 Process for the production of 4,4,8,8,10-pentamethyl-10-cyano-bicyclo[4.4.0]-dec-1,6-en-2-one  
A process for the production of the bicyclic compound 4,4,8,8,10-pentamethyl-10-cyano-bicyclo[4.4.0]-dec-1,6-en-2- one which comprises the steps of (a) reacting a ketone fraction comprising...
4774353 Triorganotin catalyst promoters for hydrocyanation  
Zerovalent nickel catalyzed hydrocyanation of mononitriloolefins e.g., 4-pentenenitrile, to dinitriles, e.g., adiponitrile, is improved by using a triorganotin compound as a promoter for the...
4699991 Methods of using silacrown ethers as catalysts  
Organosilicon compounds referred to as silacrown ethers or "silacrowns" are of the general formula: ##STR1## where R1 and R2 are organic radicals or hydrogen and n is an integer between 4 and 10...
4339395 Treatment of olefin hydrocyanation products  
Use of ammonia to control interfacial rag formation when olefin hydrocyanation products are contacted with a hydrocarbon.
4210558 Reactivation of spent copper containing hydrocyanation catalysts  
Spent copper halide hydrocyanation catalysts are reactivated by treating with hydrogen halide. The process is particularly applicable to the hydrocyanation of butadiene to 3-pentenenitrile in the...
4087452 Process of hydrocyanation of unsaturated organic compounds containing at least one ethylenic double bond  
A process of hydrocyanation of unsaturated organic compounds, which contain at least one ethylenic double bond, comprising reacting these compounds with hydrogen cyanide in the presence of an...
4082811 Recovery of metal and triarylborane catalyst components from olefin hydrocyanation residue  
Process for the recovery of catalyst components from a catalyst residue, e.g., a residue obtained from the hydrocyanation of olefins, e.g., butadiene, using a zero-valent nickel complex promoted...
3997579 Selected phosphorus complexes of zerovalent iron  
Selected novel phosphorus complexes of zerovalent iron containing phosphite ester ligands and, optionally diphosphine ligands, e.g., pentakis(trimethyl phosphite iron) and...
3725487 PREPARATION OF DIHALOALKANES AND RELATED PRODUCTS  
Process for the preparation of an alpha-, omega-disubstituted alkane by reacting a vinyl compound such as ethylene with a chlorine, bromine, or cyanide ion in the presence of an inorganic...
3694485 HYDROCYANATION OF OLEFINS  
Process of isomerizing 3-pentenenitriles to 4-pentenenitrile using compounds of iron, or ruthenium having a valence of +2 or less as a catalyst and of adding hydrogen cyanide to carbon-carbon...
3709921 METHOD OF FORMING DICYANO COMPOUNDS  
3686260 METHOD FOR PRODUCING AN ALICYCLIC DINITRILE  
3644468 METHOD OF REACTING HCN WITH UNSATURATED COMPOUND WITH A PYRROLIDONE SOLVENT  
3644467 METHOD OF REACTING HCN WITH UNSATURATED COMPOUND WITH DIMETHYL SULFOXIDE SOLVENT  
3584029 PROCESS FOR THE PRODUCTION OF LOWER SATURATED ALIPHATIC NITRILES  
3655723 HYDROCYANATION OF OLEFINS  
3591621 METHOD FOR FORMING NITRILE COMPOUNDS  
3578695 OLEFINIC NITRILES BY THE CATALYTIC OXIDATION OF OLEFINS USING HYDROGEN CYANIDE  
3564040 REMOVAL OF TRANS-2-PENTENENITRILE FROM 3- AND 4-PENTENENITRILE  
3754018 NOVEL REACTIONS OF HCN,HF AND OLEFINS  
3344179 Method for synthesizing di-glutamic acid and its alkyl derivatives  
3321530 3, 4-dihydro-2, 5-dimethoxynaphthalene  
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